Do not short (connect) positive (top), and negative (bottom) battery terminals (contacts). Keep battery that is not in use in a plastic holder (or any insulating [plastic] container).

Never charge the battery over 4.25V (another reason to use high-quality battery charger).

Do not charge unattended.

Do not use old, and new cells together.

Do not store your li-ion batteries fully charged (for an extended period of time).

Store in cold and dry place at approximately 3.7V (storage charge).

After the battery is discharged-don't leave it discharged=>charge it as soon as possible.

You must carefully read, and comply with the safety instructions and precautions in this Safety Instructions guide before charging, using your battery.Failure to read, and follow Li-ion safety instructions, and warnings may result in fire, personal injury, and property damages if the battery is charged and/or used improperly.